51902698847 has 16 divisors (see below), whose sum is σ = 52693143840. Its totient is φ = 51119158272.

The previous prime is 51902698831. The next prime is 51902698853. The reversal of 51902698847 is 74889620915.

51902698847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51902698847 - 2⁴ = 51902698831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51902698247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12270929 + ... + 12275157.

It is an arithmetic number, because the mean of its divisors is an integer number (3293321490).

Almost surely, 2^51902698847 is an apocalyptic number.

51902698847 is a deficient number, since it is larger than the sum of its proper divisors (790444993).

51902698847 is a wasteful number, since it uses less digits than its factorization.

51902698847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002.

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 51902698847 in words is "fifty-one billion, nine hundred two million, six hundred ninety-eight thousand, eight hundred forty-seven".